Traversing hoist



'G A. GRAB TRAVBRSING H0151' May 6, 1930.

4 Sheets-Sheet Filed May 4. 1927 I lill ...lll l IIJ..

HV1/EN G. A. GRAB TRAVERSING HoIsT l May 6, 1930.

mamas-sheet -Filed May 4, 1927 /4 7' TERME-Z May 6, 1930- G. A. GRAB l 1,757,798

y TRAVERSING HOIST Filed May 4, 1927 4 Sheets-Sheet 3 4 Sheets-Sheet 4 M/ N M JDR ETS /4 Tm//ve-v/ z May 6, 1936. G. A. GRAB TRAVER'SING HOIST Filed May 4, 1927 Y. ff E... 5

Patented May 6, 1930 UNITED STATES PATENT QFFICE- GUSTAV A. GRAB, OIF PORTLAND, OREGON, ASSGNOR, BY MESNEASSIGNMNTS, TO, WILLAMETTE-ERSTE-D' COMPANY, OF PORTLAND, OREGON `'riaAVE.Rsrusr noIsrjapplicati@ Yledimray 4, 1927. e serjiaiNQ. 188,796. i

This invention relates `generally .to land Y vehicles, and particularly those intended to operate without tracks and withs'pecial reference to the straddle type-of vehicle where-` by the load is picked up bodily and transported and then replaced upon supports.V

similar objects which are supported on fixed holsters or bunks not ordinarilyintended to be moved fromplace to place.V

The second Objectis to constructa special Y form of lumber carrier .peculiarly adapted to use in yconjunction with certain types. of overhead'carriers .whichthe supporting member is part of thecarrier itself.

v The third object is to reduce the cost.v

of transporting lumber by eliminatingthe Vnecessity of having a great quantity of 4bolsters which require constant "repairingymoving about and rearrangement in orderto suc-` Y cessively use same fortllie purpose intended.

The fourth object isA to provide load-'sup porting members having more road'clearance for a given lift than do the ordinarywooden bunks, thereby reducing the chances of breakage by encountering obstructionsand also byr employing this member as a tie across the 'open end of the hoist, thereby completely removing Ythe tremendous strains ordinarily imposed on the arched back ofthe veh1cle.

Thefth object is tov provide a special `formoi carrieruwhich will be easily interchangeable from the formi-herein described to the form illustrated in my application, Se#

mi No. 171,748.

The sixth object is* to so-construct the: hoist so'that its members which are inter-V mittentlyin and outof` engagement, such' as the load. supporting members, can alwaysbe held in positions `Wherebvtheycan easily engage their associated parts.V This is ac-v complished byspecial adjustments provided therefor. Y Y

The seventh object is to-provide a special form of an ordinary yielding load support which will notreqvuire the raising of the entire load-.lifting'mechanism whenever an obstruction is encountered or passes over 'and as illustrated `application,Serial No. 181,456.

`the vehiclefand` for handling vits loads. v verticallyr secured; Vto the members *'19,*

i These, and other objects, willbecomemore Y' apparent from the'the specificationfollowing Figure VV1 Yis a` side elevation of lthehoist of which lFigure 2 is a 'horizontal sectionl taken along the liner 2,2 inFigure l.. Figure 3 is a plan of the vehicle. showing its load1 2.

supportspartially in position 4'and partially being placed in position'. Figure' 4 isl a verticaltransv'erse section taken alongth` line L1-f4 inV Figure 1 butl showing the load supports in positionfor sustaining a load. VFigi -ure 5 is a verticaltransverse section taken along the 'line 545 'in Figure 1. Figuref is an enlarged'V vertical section Y taken along ,e theline 6*'-6 inFigure'l. Figure 71 is a`vertical section taken'along the line 7-"7 in Figfure 1. Figure 8 is a horizontaljseetion taken along the line 8-8 in Figure Figure 9 is a horizontal l"s'ectiontaken along the line in the accompanying drawings,;y,: e ',inwhich] l The first object ofthis invention is to con struct a carrier for lumber, boxes, crates and 9-9`in Figure` 7 jFigurelOis a .perspective view of thegrapple V'unitwhose members supi@ port the load..` Figurell isaperspective'view ofthe, entire VVehicle showing same about to pickup a load of lumber; Figure 12 is a small side'v'elevation showing the vehicle straddling .the load showing Vthergrapples i1i`E their transverse position ready to pickup the load. Figure 13 is a similar view but/showingthe loadv elevated ready for transportation. Figurelll is an enlarged side elevation .of al grapple control .lever including stopsV for the grapples in their transyerse and lon- :gitudinal positions.

Similar numbersof reference` refer to sim-y .ilar parts throughout the several views. Y Referring'jn detail-to'the'drawingathere Vis Villustrated 'an 'arched frame 15 on Ywhose steering spindles 16 are mountedlthewheels 17. The framec'ornerslS tare joined longitudinallybythe angular `ties 19, 20, 21 and 22, asfmore fully. 'set forth in my On the top of the vehicle is mountedy an engine-23which furnishes power for moving co-pending` and 21 are the uprightangles 24, which face each other in pairs near each corner of Vthe machine. The members 24 act as gudies for the vertical slide 25 to whose outer side is attached the vertical members 26 of the loadflifting frame. The 1members126 aree preferably trussed` for listiiening purposes The member 32 is held in its lowermost posil tionbygravity;V e The members 32 are Joined by the two longitudinal channel members 33.-

Y which,` besides acting ,as a `tiein'the mem- Veach of which is pivoted `on la shouldered pin 36inthemember32- Y f y On the upperv end ofreach pin 36 islplaced bersi26, also carry the stops 347 which limit ytheloutwrard vmovement of the grapples 35,

Q a shertleverl' by means oiwhich the grap f the grapples and insure `their proper :re-

Vples 35 areoperatedfk Adjustablestops38,

limit the inward or transverse. movement. of

c lation ,when theoperating mechanism is moved toy ,its limit in.ione d1rection, The

. 3o`v Y e fact lthat they are right and left, Vand one e 39,ai1drtheptlier having a downturn-ed endsV l? t0-,1; The. 1539 ,and 40.' have Slight back- Ward .bends toginsuref their proper Y relation 4 when supporting.- alloads grapples 35 diii'erfrom each otherA only 1in the of`each lateral pair having'an upturned end In order. toV operate th areprovidedthe two hand levers41, each of which'is moi'mtedl on a rock. shaft V42and carriesthe ,segmentv gear 43- which, meshes `With the pinion 44 onr the upper end of ,the vertlealshaft 45 which is joined to thesquarel shaft 46 byl means .of the sleeve 47 in -which the square shaft 46 canv slide... Each lever 41 lis provided with, a quadrant `48 whose position.Y The paw] 50 is raised Aout-0f its notclr 49: bymeans of the handtrip 51V and Yits"fcorrnecting rod 52 which is joinedtothe Ona member 331s secured anangularl hp 53" whose lower endy supports the lever 54 whose connecting rods 55"j'oin'same tothe 62 andv thee-c b'ove 2T longitudinalihaft' `56fsvliich journals 'infthe bearings 51Twhich; ri'ritur'm are 'indented ,en the'` ties 19;t The 'oppfosite*ends,53` ofthe Yshaft 56 'arethreadedfto receive the travelingnutsthe guide 6Qfseeured .acrosseach` ,end pairE ci 59: 'which fare f prevented from rotation by bearingsf: Vis transmittedvto the eansof-thesprockets 61 and:

` the grapples 35 i, there brackets 65 for the bell crank levers 66 whose free ends are joined to the nuts 59 by means of the connecting link 67V and Whose lower ends are joined to the vertical slide 25 by means of the link 68. c Y

.The upper end of yeach member 26 is pro vided with `an 'adjustable connection 69 by means ofwhich it can be held in its proper i relation to the tie 19 and ultimately cont-rol the lateral'rposition of the pins3`6,"making 'lit possible-t0 correctly-position the grapple ends with relationl to eachV other, thereby making it possible to positively insure'their correct engagement, which is essential, since. wlieiithaloa'd 70V is supported onl the graprlles ther-are placed ngtenson and ver@ they not properly engaged they would tend Y to pull apartwith obvious bad ei'ects on'the r`frame 15,k

fEach grapple 35 has itspivoted pro vided with an upturned Aslice fl, whi pref vents samefrom digging into the plankmg of the roadways, o rother obstructions,. and causes 1thegrapple unit :to vyield instead of .tryingftovraise the loadlifting mehanisniI or the `vehicle itself, which wouldbethe Anot provided, Y. a Y ,f u

VAttention'is also dravvnfto ltl`ie' bra c'esl `7 2 which provide longitudinal rigidity `fto theF if the vertical,yielding'grapple hookivere load-liftingmechanism.

, In operation it"is'necessary toemploy a underneath the@ load by the' manipulation o f the hand levers 41. The grapples having en-V Ygaged each Qtheras shown in dotted lines in operated moving the lever '('4'fro1n a powertake-ofLsuch as is now in commonuse.:

-Thisy power takeoff must -obviouslybe reversible since it is necessary to 'lower' the hftingmechanism aswell as raise it. VSuch reversible power take-Oil runits v`are nivfcomhere.

' The loadhaving'l been raised (as shown in ,'Figure- 1 3) the driver merelyrfmoves @the ve, `hicle Vto' the desired Vpoint Vand Setsvhis` load Y down upon 'anotherpair' of bunks, which will; release the grapples .35and permitsame to be returned to a longitudinal position.

are employed for thetransportation of lumber andsimilar objects, the load is'supp'orted on fixedbeams which form apart of the vehiclef ,'lfhe hoist'hereinV described is of spe' cial value Wheresuch overhead'handling de- .supportifigbunk 73 f o`rftheload 7 0 which makes .it possible tofm'ove the grapples v35 -Figure2, theload-lifting .mechanism is now In manyinstances where overhead systems y vices are alsoV employed, since both require the use of ixed or stationary supports-or'b ols'ter'sl.x

While the grapples kherein described are illustrated as moved in"pairs by means'v of -separate levers through segment vgearsand pinions witlrthe aid of levers and connecting rods, it be seen thatxthere are countless' e ways in which the grapples can he swung inwardly from the side frames, either successively or separately, without departing from the spirit of this invention. n

I claim: Y

l. A traversing hoist having, in combinap tion a wheeled frame adapted'to straddle a load; pairs of horizontal swinginggrapples hinged to the sides of saidV frame having means onv their swinging ends for attachilig said grapples to eachother in a manner to place same in tension when a load is ,placed acros'sthe open lower end of said hoist frame,

said grapple arms having means for joining their ends for the purpose of tying the lower ends of said side frames together, said grap- 'ple arms having vertically yieldable supports for Vconnecting'same to said side frames;

lifting means for raising all of said grapple" arms in unison; and swinging means whereby said arms can be moved into rlateral or transverse poslti-ons.

GUsTAv A. GRAB.

hinged Athereto each of said load-lifting mechanisms having horizontal grapples hingedy theretoaon vertical axes and adapted to be swung laterally and horizontally across said frame for the purpose of supporting a load across its entire width, and hooks formed on the swinging end of said grapples for uniting same longitudinally. f

4. A'load supporting mechanism for traversing hoists consisting of a pair of arms having their ends hinged to the sides'of said hoist and having means for swinging Vsame transversely across said hoist to a load supporting position, the swinging ends of said y arms havmg hook ends formed thereon adapted to engage each otherY when in a transverse position ;,and means for adjusting said arms to cause saine to lie in Vthe same vertical and horizontal plane justprior to engagement of the hook ends.

5. A traversing hoist having, in combina! tion, a wheeled straddle frame; pendant sides for said frame; a grapplefarm frame yieldingly mounted inthe bottomy of each pendant side; a pair of horizontal grapple arms pivotally mounted on eachgrapple frame; means for swinging said grapple arms transversely across said hoist; means for uniting the ends of said arms in a Inan-` ner to convert same into tension members; and means for raising said grapple frames 1n unison.

G. A traversing hoist having,in combina-k tion. longitudinally rigid Vside frames, each of said side frames having a horizontalgrapple arm hinged near each end thereof` adapt ed to be swung transversely with said frame into engagement with a corresponding arm in a manner to form two continuoussupports 

